Allegiant are looking into the feasibility of selling tickets that could increase in price after you have purchased one. This is due to the increase in fuel prices.
Not sure what anyone's take on it is here, to me it doesn't seem like a good idea. It certainly seems like one way of getting customers to use alternate methods of travel.
I wonder what would happen if someone had a confirmed ticket, and when they turned up at the airport for checkin were advised they had to pay more but didn't have the funds to pay any extra?